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Nissan Car Key Replacement Nissan key fob batteries are simple to replace. But first you'll need to know if your car uses an intelligent fob, push to start button or regular remote/non-transponder key. You'll also require your key code, which must be kept in a safe location and should match with the one that came with your car. Transponder Keys Transponder keys are commonly used in newer cars. They feature an RFID microchip that emits a unique car number when keys are inserted into the ignition. It is designed to stop theft by making sure that only the right key is able to start the vehicle. Contact your local dealer or locksmith to view an example of this technology. When the transponder key is placed in the ignition, it transmits an electrical signal to the chip within the vehicle's engine control unit (ECU). The ECU checks to see if the key's code on the key matches the digital serial number of the ECU. If nissan juke replacement key does, then the ECU removes the immobilizer so that the engine can start. If the code isn't match, then the ECU will reject the signal and keep the engine from starting. These keys are more costly than traditional keys made of metal but they provide greater security. However, car thieves have adapted over time and found ways to circumvent this anti-theft device and the additional cost will not deter them entirely. Many people are wondering if they could copy a transponder keys for themselves. The answer is yes but it's better to leave it to professional auto locksmiths. In addition, the process may vary based on the vehicle's make and model. Mechanical Keys Many older Nissans had mechanical keys. These traditional keys were not equipped with remote functions and could only be used to unlock the doors of the vehicle and the ignition cylinders. If your key breaks or the case is damaged, a locksmith will usually replace the inner parts and make a replacement that functions as new. A reputable and experienced auto locksmith can also cut you the key at a less cost than a dealership. There are various kinds of mechanical keys each with its own unique replacement process. Linear switches come with an actuation chart that is linear, for example. As you press the key down, it will move until it comes to a stopper. The switch will transmit the signal to start the car when the key is introduced into the ignition. Intelligent keys are equipped with a chip in them that communicates with the computer system of the vehicle. If you lose your keys, it must be replaced with a brand new one that is programmed to work with the vehicle. This requires a higher degree of technology in the key that is only available through a specialized automotive locksmith, and will cost you more than a regular replacement key would at the dealership. Key Fobs Since the mid 1990s, key fobs have become a standard in almost all automobiles. You can unlock, lock and arm your car's alarm system with the push of a button. Many people think that these systems are secure enough to ensure that only the person with access to your keycode can drive off with your vehicle. But this isn't always true. With just a few steps, people who aren't terribly careful are able to exploit these systems. It's possible to replace your Nissan key fob's battery if it's not functioning properly. Most key fobs use rechargeable CR2025 or CR2032 battery, and they generally last between two and three years. Check the owner's manual for directions if you're not sure how to replace the battery. If your key fob won't turn on because of a more serious problem, it may need to be replaced or programmed. These issues can be more complicated than a simple replacement of the battery and may require the assistance of an auto locksmith. Certain locksmiths specialize in replacing and repairing smart keys and can provide you with a OEM intelligent key at a price lower than the dealer. They can also deliver to you, thereby saving you the headache of leaving your vehicle at an establishment for service. They are also available all hours of the day all week. Remotes There are some Nissan models that feature a remote keyless entry system which makes use of a key fob to unlock your door and/or to start the engine. Having a spare key in case you misplace yours is highly recommended. A key fob replacement that functions will save you from having to pay for a tow and the cost of replacing your lost ignition keys. Fobs emit a frequency that communicates with the vehicle's onboard computer to complete a sequence of actions, including locking or unlocking the doors, activating the trunk release, or triggering the alarm for panic. Explore our collection of Nissan key fobs and choose the right one to match your year and model. You can also buy a pre-programmed key fob which is a less costly alternative. Select the correct style as many of them look similar and can cause problems if they are not compatible. Online sellers who offer a preprogrammed key fob usually require proof of ownership or registration to prove legitimacy. Websites that don't require this information might be scams.